You can do this without bootstrap col-*-* and providing an explicit width for both divs, plus a bit of extra style for your icon bar.
Updated Code
<div class="activity-panel-item--header"> <div class="pull-left" style="width: 75%;"> <p>02 Development, LLC v. 607 South Park, LLC </p> </div> <div class="pull-right" style="position: absolute; right: 0px; min-width: 25%;"><span class="icon icon-trash-o pull-right">1</span><span class="icon icon-cog2 pull-right">2</span><span class="icon icon-pencil3 pull-right">3</span></div> </div>
jsFiddle
EDIT 1
If you think deeply in accordance with this decision, we are both at the same point. Let me explain that I give a minimum width of 25% for the icon bar and 75% width for the left element. This means that, depending on the situation, the width of the icon bar may increase, but it should be at least 25% total screen or container, and the width of the left element should be 75% , which may decrease depending on the situation.
And you give a width of 125px or any line of the icon, which means that it can increase or decrease depending on the situation, but the original is 125px
Here I mean the area and screen resolution. If the icon is larger and does not fit in 25% , then this width can be increased, and the left element can be reduced, just like your edited case, if the icon bar does not fit at 125px , then this width can increase, because we we will not specify the maximum width to the icon bar or the minimum width to the left element.
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EDIT 2
I hope this is not illegal in stackoverflow to edit the answer as many times as I need.
Besides coding, some math can be done. Suppose we have 3 icons (32x32) each. Thus, the total width of the icon wrapper (32 + 32 + 32) 96px adds a bit of 12px edge to each icon (12x3 = 36) on the right side for beauty. Now the wrapper width is 96 + 36 = 132px . And we are on a device with a width of 400px . My icon wrapper (25%) is 100px out of 400px (device width), and your wrapper is 125px . I say that the minimum width of the wallpaper for the browser in the OK browser is 100px , but if the icons are no longer fit in 100px , you can increase this width to suit your needs. In this case, it will increase 100px to 132px or Any. But I do not want to break these icons on the next line. They should be displayed in the original size and style (32x32) plus margin. You can split the left content (text) to wrap these icons, but do not break the icons themselves. They should keep their original size. No matter what the width of the device. Browser, please do not reduce the size of the icon, just increase the width of the wrapper.
And your 125px less than 132px . Thus, your shell will break and one of its icons will move to the next line. Until you need CSS and explicitly write 132px or any of the width . And what if after a month your boss said, please put a 40x40 badge and after 3 months and so on ...?
Try it, place the big icons and see what happens to your width: 125px .